/Engine/Plugins/Developer/Concert/ConcertMain/Source/Concert/Public/ConcertSession.h
static bool CommonBuildCustomRequest ( const [UScriptStruct](API\Runtime\CoreUObject\UObject\UScriptStruct) * RequestType, const void * RequestData, const [FGuid](API\Runtime\Core\Misc\FGuid) & SourceEndpointId, const [FGuid](API\Runtime\Core\Misc\FGuid) & DestinationEndpointId, [FConcertSession_CustomRequest](API\Plugins\Concert\FConcertSession_CustomRequest) & OutCustomRequest )